56 			printf("ply error: faces of %d vertices not supported", num);

    56 			printf("ply error: faces of %d vertices not supported", num);

    57 			continue;

    57 			continue;

    58 		}

    58 		}

    59 		f >> v1 >> v2 >> v3;

    59 		f >> v1 >> v2 >> v3;

    60 		face = new Triangle(vertices.at(v1), vertices.at(v3), vertices.at(v2), mat);

    60 		face = new Triangle(vertices.at(v1), vertices.at(v3), vertices.at(v2), mat);

    62 

    62 

    63 		normals.at(v1) += face->getNormal();

    63 		normals.at(v1) += face->getNormal();

    64 		vertex_face_num.at(v1)++;

    64 		vertex_face_num.at(v1)++;

    65 		normals.at(v2) += face->getNormal();

    65 		normals.at(v2) += face->getNormal();

    66 		vertex_face_num.at(v2)++;

    66 		vertex_face_num.at(v2)++;